## Physical Properties of Crystals |

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Page 236

The refractive indices of the two waves, as functions of the direction of their

common wave normal, are obtained by drawing an ellipsoid known as the

permittivity) ...

The refractive indices of the two waves, as functions of the direction of their

common wave normal, are obtained by drawing an ellipsoid known as the

**indicatrix**. If 21, a2, as are the principal axes of the dielectric constant (or thepermittivity) ...

Page 238

For the three remaining crystal systems, the orthorhombic, monoclinic and triclinic

, the

in Fig. 13.3, and hence two privileged wave normal directions for which there is ...

For the three remaining crystal systems, the orthorhombic, monoclinic and triclinic

, the

**indicatrix**is a triaxial ellipsoid. There are two circular sections, as illustratedin Fig. 13.3, and hence two privileged wave normal directions for which there is ...

Page 283

As is shown in Chapter XIII, §§ 1.1 and 1.2, the optical properties of transparent

crystals may be described by reference to an ellipsoid called the

triclinic, monoclinic and orthorhombic crystals the three axes of the

...

As is shown in Chapter XIII, §§ 1.1 and 1.2, the optical properties of transparent

crystals may be described by reference to an ellipsoid called the

**indicatrix**. Fortriclinic, monoclinic and orthorhombic crystals the three axes of the

**indicatrix**are...

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### Contents

THE GROUND WORK OF CRYSTAL PHYSICS | 3 |

Summary | 29 |

EQUILIBRIUM PROPERTIES | 45 |

47 other sections not shown

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### Common terms and phrases

angle anisotropic applied biaxial birefringence centre of symmetry Chapter conductivity constant crystal classes crystal properties crystal symmetry cube cubic crystals defined denoted diad axis dielectric direction cosines displacement elastic compliances electric field electro-optical electro-optical effect ellipsoid equal equation example expression follows forces given gives grad heat flow Hence indicatrix isothermal isotropic magnetic magnitude matrix notation measured moduli Mohr circle monoclinic number of independent Onsager's Principle optic axis optical activity orientation parallel permittivity perpendicular photoelastic effect piezoelectric effect plane plate polarization positive principal axes produced pyroelectric effect quadric radius vector referred refractive index relation representation quadric represents right-handed rotation scalar second-rank tensor shear shown shows strain stress symmetry elements Table temperature gradient thermal expansion thermodynamics thermoelectric effects Thomson heat tion transformation law trigonal uniaxial unit volume values wave normal wave surface written zero